Flouk-bolt



N. BAUMANN.

Flour Bolt. I

No. 18,179. v j Patented Sept. 15, 1857..

- UNITED STATES PATENT OFFICE N. BAUMANN, OF ELMORE, ILLINQIS.

FLOUR-BOLT.

Specificationpf Letters Patent No. 18,179, dated September {15,1857.

To all whom it may concern:

Be it known that I, N. BAUMANN, of Elmore, in the county of Peoria and State of Illinois, have invented a new and Improved Flour-Bolt; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had tothe annexed drawings,making part of this specification, in which Figure 1, is a transverse vertical section of my improvement, (00) in Fig. 2, showing the plane of section. Fig. 2, is a longitudinal section of the same; (y) Fig. 1, indicating the plane of section.

Similar letters of reference indicate corresponding parts in both figures.

My invention consists in the employment or use of a stationary shell or case which is formed of metal or wood and of-a peculiar shape, the shell or case having a frame covered with bolting cloth attached to one side of it. Within the case or shell is placed a rotating shaft, having heaters attached; and the whole is so arranged that the rotation of the heaters in connection with the form of the shell or case will cause the flour to be thoroughly detached from the bran and a perfect separation of the bran and flour effected.

To enable those skilled in the artto fully understand and construct my invention, I will proceed to describe it.

A represents a box or chest of rectangular form, and B represents a shell or case per manently secured therein; the said shell is secured longitudinally within the box A, but somewhat inclined as shown in Fig. 2.

The shell or case B transversely is formed of two curves (a) (b) which are so shaped and connected together as to form a recess (0), a pendant project-ion ((Z) being in front of the recess, between the said recess and the front and open side of the shell. The front side of the shell or case has a frame (6) secured to it, and this frame is covered by a bolting cloth (f).

The depressed or lower end of the shell or case B is provided with a spout which passes through the end of the box or chest, and the elevated end at its upper side has an aperture (h) made in it.

Within the shell or case B, a shaft (l is placed longitudinally, the journals of said shaft being fitted in suitable bearings at the ends of the box or chest. This shaft is provided with a cone of pulleys-(2') at one end;

and la series of arms (j) are Secured upon the shaft 0;; said arms ahavzing :flat plates tor heaters (70) secured to their outer ends. The plates or heaters have a tangential posit-ion relatively with the shaft C, and three heaters are shown in the drawings but more or less may be used. The heaters (70) are not parallel with the shaft C, but are placed somewhat spirally with it, as seen in Fig. 2; and the edges of the heaters do not quite touch the surface of the curved portion (a) of the shell or case.

The operation is as follows :The ground grain passes into the elevated end of the shell or case B, through the aperture (h) and the shaft C is rotated in the direction indicated. by the arrow Fig. 1, with a speed of about 200 or 250 revolutions per minute. As the shaft C rotates, the heaters (70) will throw the ground grain into the recess (0) with considerable force; the ledge (d) serving to arrest it, and the concussion or jar to which the ground grain is subjected will cause the flour to be detached from the bran. The bran and flour are both thrown against the bolting cloth (a) by the heaters (70), the flour passing through the bolting cloth into the chest or box A, while the bran is fed toward the spout (g) by the spiral form of the plates or heaters (70). v

My improved bolt may he cheaply constructed, and as the ground grain is thrown around within the shell or case, no cooler is required, as the ground grain is scattered or spread out and brought in contact with the air so that it is quickly cooled. This is an important feature in the invention as the bolt may receive the ground grain direct from the stones. Another advantage is that the frame (6) may be readily detached from the shell or case, and bolting cloths of different degrees of fineness attached to said shell or case, so that flour of any required quality may be obtained, as desired. My improvement therefore will be valuable in grist mills, for some farmers desire a small. quantity of flour from a given quantity of grain, while others desire a larger quantity; the smaller the quantity of'flour obtained, the better of course will be the quality. Vet or damp grain may also be bolted by my improvement, and in case the bolting cloth becomes clogged, it may be readily detached from the shell or case B, and cleaned.

Thus it will be seen that my improved bolt is simple in construction, is not expensive to build, is effective in its operation, and possesses advantages as regards the varying qualities of flour that may be obtained by adjusting the cloth and regulating the speed of the beaters, and also in cooling and drying the ground grain.

I am aware that beaters placed bot-h parallel and spirally with their shaft have been used for similar purposes; and I therefore 10 do not claim said beaters separately; but

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is The shell or case B, curved or formed as shown, in combination with the rotating beaters (7c) and frame ((2) with bolting cloth (f) attached; the whole being arranged as shown for the purpose set forth.

NEPOMUK BAUMANN.

WVitnesses:

JOHN CARTER, PETER AUTEN. 

